I have the following setup (very well possible that this is no good practice but it is the given situation):
There were 2 x 3TB dynamic GPT disks in a Windows server, Disk0 with EFI (~200 MB), System reserved (~100MB) and C (200GB) and the rest unallocated. Disk1 had a mirror of C and the rest unallocated.
Now Disk0 failed and had to be replaced with an identical new disk. And windows isn't booting anymore (I guess this is normal as there is no more EFI partition etc.)
The question is, what is the best/fastest way to get an EFI/System reserved partition back and mirror the healthy C partition from Disk1 to Disk0 (and of course also boot from it again)? I tried some basic stuff with diskpart but couldn't find anything helpful, still I guess diskpart would be the tool to go with but also here I'm not sure...